While fasting,
one should hurry with iftar after one is sure that the sun has set. Delaying
Iftar without any legitimate cause isn’t allowed. Sahl ibn Saad has related
that our blessed Prophet has said “People shall be in welfare as long as
they hurry in iftar (breaking fast).” (Bukhari and Muslim)

Abu Hurairah
has said that our blessed Prophet has said, “Those of His bondsmen are
dear to Allah who hurry with iftar.” (Musnade-Ahmad and Tirmidhi)